Search domain
Search domain is a network setting under the DNS tab in Mac OS X, next to DNS server settings. It restricts the domain when looking up an address.[1] For example, if the search domain was wikipedia.org, typing "en" in the browser will redirect the user to "en.wikipedia.org". Setting this field to ".local" allows the user to override default settings by the ISP.
References
- ↑ Editing DNS and search domain settings. Apple.com